Fig. 1.

Ribbon representation of the structure of rat glutathione transferase M1-1 (Ji et al. 1992) looking down the noncrystallographic twofold axis of symmetry. Domain 1 and domain 2 are in dark and light gray, respectively, with the linker region connecting the two domains in black. The positions of Phe 56 and Arg 77 at the dimer interface as well as glutathione bound to domain I of each subunit are indicated.